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Diffstat (limited to 'src/imports/multimedia/qdeclarativebackgroundaudio.cpp')
-rw-r--r-- | src/imports/multimedia/qdeclarativebackgroundaudio.cpp | 137 |
1 files changed, 137 insertions, 0 deletions
diff --git a/src/imports/multimedia/qdeclarativebackgroundaudio.cpp b/src/imports/multimedia/qdeclarativebackgroundaudio.cpp new file mode 100644 index 000000000..d56e9992f --- /dev/null +++ b/src/imports/multimedia/qdeclarativebackgroundaudio.cpp @@ -0,0 +1,137 @@ +/**************************************************************************** +** +** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** GNU Lesser General Public License Usage +** This file may be used under the terms of the GNU Lesser General Public +** License version 2.1 as published by the Free Software Foundation and +** appearing in the file LICENSE.LGPL included in the packaging of this +** file. Please review the following information to ensure the GNU Lesser +** General Public License version 2.1 requirements will be met: +** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain additional +** rights. These rights are described in the Nokia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU General +** Public License version 3.0 as published by the Free Software Foundation +** and appearing in the file LICENSE.GPL included in the packaging of this +** file. Please review the following information to ensure the GNU General +** Public License version 3.0 requirements will be met: +** http://www.gnu.org/copyleft/gpl.html. +** +** Other Usage +** Alternatively, this file may be used in accordance with the terms and +** conditions contained in a signed written agreement between you and Nokia. +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ +#include "qdeclarativebackgroundaudio_p.h" +#include <qmediabackgroundplaybackcontrol.h> +#include <qmediaservice.h> + +void QDeclarativeBackgroundAudio::classBegin() +{ +} + +void QDeclarativeBackgroundAudio::componentComplete() +{ + setObject(this, QMediaServiceProviderHint(QMediaServiceProviderHint::BackgroundPlayback)); + if (m_mediaService) { + m_backgroundPlaybackControl = + static_cast<QMediaBackgroundPlaybackControl*>( + m_mediaService->requestControl(QMediaBackgroundPlaybackControl_iid)); + if (m_backgroundPlaybackControl) { + connect(m_backgroundPlaybackControl, SIGNAL(acquired()), this, SIGNAL(acquiredChanged())); + connect(m_backgroundPlaybackControl, SIGNAL(lost()), this, SIGNAL(acquiredChanged())); + if (!m_contextId.isEmpty()) + m_backgroundPlaybackControl->setContextId(m_contextId); + } else { + qWarning("can not get QMediaBackgroundPlaybackControl!"); + } + } + QDeclarativeMediaBase::componentComplete(); +} + +QDeclarativeBackgroundAudio::QDeclarativeBackgroundAudio(QObject *parent) + : QDeclarativeAudio(parent) + , m_backgroundPlaybackControl(0) +{ + +} + +QDeclarativeBackgroundAudio::~QDeclarativeBackgroundAudio() +{ + if (m_backgroundPlaybackControl) + m_mediaService->releaseControl(m_backgroundPlaybackControl); +} + +/*! + \qmlproperty string BackgroundAudio::contextId + + This property holds the unique contextId for the application + + When a new contextId is set, the previously set contextId will be released automatically. +*/ +QString QDeclarativeBackgroundAudio::contextId() const +{ + return m_contextId; +} + +void QDeclarativeBackgroundAudio::setContextId(QString contextId) +{ + if (m_contextId == contextId) + return; + m_contextId = contextId; + if (m_backgroundPlaybackControl) + m_backgroundPlaybackControl->setContextId(m_contextId); + emit contextIdChanged(); +} + +/*! + \qmlproperty bool BackgroundAudio::acquired + + This property indicates whether the application holds the playback resource in music daemon +*/ +bool QDeclarativeBackgroundAudio::isAcquired() const +{ + if (!m_backgroundPlaybackControl) + return false; + return m_backgroundPlaybackControl->isAcquired(); +} + +/*! + \qmlmethod BackgroundAudio::acquire() + + try to acquire the playback resource in music daemon +*/ +void QDeclarativeBackgroundAudio::acquire() +{ + if (isAcquired() || !m_backgroundPlaybackControl) + return; + m_backgroundPlaybackControl->acquire(); +} + +/*! + \qmlmethod BackgroundAudio::acquire() + + try to release the playback resource in music daemon +*/ +void QDeclarativeBackgroundAudio::release() +{ + if (!isAcquired() || !m_backgroundPlaybackControl) + return; + m_backgroundPlaybackControl->release(); +} |